World Resorts Norway Oslo Weather

Oslo Sea Temperature in September

Average sea water temperature in September:
+59.8°F
Minimum sea water temperature in September: 65.3°F
Maximum sea water temperature in September: 54.3°F

Daily sea water temperature in September, °F

Show year:
2025
2024
2023

The average sea water temperature in September of 2025 was 60.7°F. The highest and lowest sea temperatures during the month were 64.8°F and 56.3°F.

Monthly sea water temperature in Oslo, °F

Which Norway resorts have warmest sea in September?

Place name September 2025 September 2024
Holmenkollen 60.7°F 60.2°F
Oslo 60.7°F 60.3°F
Stavanger 60.0°F 59.6°F
Ålesund 57.5°F 57.3°F
Bergen 56.8°F 57.3°F
Trondheim 56.0°F 56.8°F
Tromse 50.4°F 53.3°F

Best time for vacation in Oslo

Sunniest months:
June 11 days
May 11 days
July 11 days
Warmest months:
July 68.4 °F
August 65.4 °F
June 64.6 °F
Warmest sea temp:
July 65.7 °F
August 65.1 °F
June 60.3 °F
Coldest months:
January 25.0 °F
February 28.8 °F
December 29.0 °F
Rainiest months:
May 6 days
August 6 days
July 6 days
Windiest months:
May 6.4 mph
June 6.1 mph
April 6.0 mph

Oslo on a weather map

Current weather
15:49
Oslo
+30°F
SE 10 mph
Feels like: +21°F
Precip.: 0%
Places in Norway:
Name
°F
Bergen
+34°F
Lillehammer
+21°F
Ålesund
+37°F
Oslo
+30°F
Stavanger
+37°F
Tromse
+21°F
Trondheim
+32°F
Flam
+1°F
Hemsedal
+9°F
Holmenkollen
+30°F
24 Hours Forecast
Oslo
Local time: 15:49
December 29, monday
1800
28°F
SE
9 mph
2100
28°F
SE
6 mph
December 30, tuesday
0000
27°F
SE
8 mph
0300
25°F
SE
6 mph
0600
23°F
SE
5 mph
0900
21°F
SE
4 mph
1200
25°F
E
3 mph
1500
23°F
E
3 mph
Units of measurement: °C / °F